Potlatch 2 and its renderer Halcyon introduced a simple stylesheet description language, MapCSS, which developers from several other projects have happily expressed interest in supporting – indeed, there’s already two other implementations in existence.

To co-ordinate development, and provide a forum for those making MapCSS stylesheets, we now have a mailing list:

Calling all bulk importers (@Talk)

Cable distribution cabinets (tagging@)

Originally about the tag for small cabinets that distribute electricity to
homes.

Evolved in a new discussion about the power=* tags that don’t mean in English
what their tags suggest: a power station is power=generator, a power
substation is power=station and then there’s power=substation

highway=motorway/motorroad implications (tagging@)

Question on what these tags should imply (e.g. oneway=yes, bicycle=no…)
Usual discussion that these tags mean different things in different countries.

Aerodrome classification (tagging@)

Currently all airports, airfields and heliports are just tagged with aeroway=aerodrome and we can an extra tag to discern between international airports and small airstrips. But what should be the basis for this classification? Some want to use numbers like the amount of air movements,
other want a more subjective approach. And then there’s the question of which
tag to use (aeroway=airstrip, aeroway=small, importance=3…)